Functions/Dates & time/day
Dates & time Scalar

day()

Extract the day component from a date or timestamp

Arguments & returns

4 overloads

day(ts)

Scalar
Overload link ts Returns
#01 DATE BIGINT
#02 INTERVAL BIGINT
#03 TIMESTAMP BIGINT
#04 TIMESTAMP WITH TIME ZONE BIGINT

Example

day example
SQL
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In other engines

Used in larger rewrites 1

These examples use day as one part of a larger SQL translation.

Apache Sparkmonths_between()

SELECT MONTHS_BETWEEN('1997-02-28 10:30:00', '1996-10-30')
In DuckDB
SELECT DATE_DIFF('MONTH', CAST('1996-10-30' AS DATE), CAST('1997-02-28 10:30:00' AS DATE)) + CASE WHEN DAY(CAST('1997-02-28 10:30:00' AS DATE)) = DAY(LAST_DAY(CAST('1997-02-28 10:30:00' AS DATE))) AND DAY(CAST('1996-10-30' AS DATE)) = DAY(LAST_DAY(CAST('1996-10-30' AS DATE))) THEN 0 ELSE (DAY(CAST('1997-02-28 10:30:00' AS DATE)) - DAY(CAST('1996-10-30' AS DATE))) / 31.0 END

SQLGlot example ↗